The unnecessary casting ops between integer and index types cause the Affine for validation failed. This only occurs when the constant values are created inside another affine scope.

Fixing the const index value builder to create the index const directly and the loop statement handler in the range-based case to create index type.

Added the test case (https://github.com/ORNL-QCI/qcor/issues/240

)

Signed-off-by: Thien Nguyen <nguyentm@ornl.gov>

Signed-off-by: Alex McCaskey <mccaskeyaj@ornl.gov>

All the loop constructs have now been converted to Affine/SCF

Signed-off-by: Thien Nguyen <nguyentm@ornl.gov>

Generate MLIR from a file name or (kenel name + source string): the first one will delegate to the latter after reading the file.

Refactor MLIR API: let the code to detect the language from the source string.

Signed-off-by: Thien Nguyen <nguyentm@ornl.gov>

Signed-off-by: Alex McCaskey <mccaskeyaj@ornl.gov>

Signed-off-by: Alex McCaskey <mccaskeyaj@ornl.gov>